| 聚茜素红-多壁碳纳米管复合膜修饰电极的研制及叶酸含量测定 |
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| 引用本文： | 杜学萍,娄童芳,董莹,屈建莹. 聚茜素红-多壁碳纳米管复合膜修饰电极的研制及叶酸含量测定[J]. 电化学, 2014, 20(5): 482. DOI: 10.13208/j.electrochem.131105 |
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| 作者姓名： | 杜学萍 娄童芳 董莹 屈建莹 |
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| 作者单位： | 河南大学化学化工学院环境与分析科学研究所，河南 开封 475004 |
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| 基金项目： | 河南省教育厅科学技术研究重点计划项目（No.13A150077）资助 |
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| 摘 要： | 采用电聚合方法将茜素红（AR）非共价修饰到多壁碳纳米管（MWCNTs）上，制得了PAR/MWCNTs/GC电极，该电极对叶酸（FA）具有良好的电催化作用. 结果表明，在最佳实验条件下，在-0.63 V处叶酸还原峰电流与浓度（1.25×10-6 ~ 4.00×10-5 mol·L-1）呈现良好线性关系，相关系数0.9985. 用标准加入法检测了回收率，其值达92.0% ~ 102.0%. 该电极制作简单，有良好的稳定性．
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| 关 键 词： | 叶酸 多壁碳纳米管 茜素红 |
| 收稿时间： | 2013-11-05 |
Determination of Folic Acid by Composite Film Electrode Modified with Poly-Alizarin Red and Multi-walled Carbon Nanotubes |
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| Abstract: | The novel modified electrode was fabricated by electropolymerizing alizarin red onto the surface of multi-walled carbon nanotubes on glassy carbon electrode surface, which exhibited good electrocatalytic activity for folic acid. The experimental results showed that the reduction peak current of folic acid at -0.63 V was linear to its concentration over the range of 1.25×10-6 ~ 4.00×10-5 mol·L-1 in the optimized experimental conditions (R = 0.9985). Test for recovery was carried out by standard addition method, and the recovery ratios were in the range of 92.0% ~ 102.0%. The modified electrode was prepared simply with excellent stability, which provides a new feasible method for determination of folic acid. |
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| Keywords: | poly-alizarin red multi-walled carbon nanotubes folic acid |
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